Below are listed scales which are strictly proper, in the sense the term is used by music theorist David Rothenberg. The "type" of a scale is defined by the linear temperament supported by 31et in which it has the least span. "Breed type" means it is a tie between miracle and hemiwuerschmidt.
Meantone type
Valentine
Miracle type
Mohajira type
Hemiwuerschmidt type
Mothra type
Orwell type
Breed type